正規表現のx修飾子を使い、かつ、"ム"を指定するとTest::MinimumVersionでrequires 5.017009になる。 これかな？ http://search.cpan.org/dist/perl-5.17.9/pod/perldelta.pod#Five_additional_characters_should_be_escaped_in_patterns_with_/x

miniversion-fast.t

use strict;
use warnings;
use utf8;
use Test::More;
use Test::MinimumVersion::Fast;

minimum_version_ok('miniversion.pl', '5.010000');

done_testing;

# ok 1 - miniversion.pl
# 1..1

miniversion.pl

#!/usr/bin/env perl
use strict;
use warnings;
use utf8;
use 5.010000;

my $re = qr/ム/x;

miniversion.t

use strict;
use warnings;
use utf8;
use Test::More;
use Test::MinimumVersion;

minimum_version_ok('miniversion.pl', '5.010000');

done_testing;

# not ok 1 - miniversion.pl
# #   Failed test 'miniversion.pl'
# #   at miniversion.t line 7.
# # miniversion.pl requires 5.017009 due to syntax
# 1..1
# # Looks like you failed 1 test of 1.